ict.docx

**Quiz 3:** 1. **What is the purpose of a linkage in a mechanism?**\ **Answer:** To transfer motion and force between different parts of a mechanism. 2. **What is the difference between an open-loop and a closed-loop system?**\ **Answer:** An open-loop system has no feedback; a c...

**Quiz 3:** 1. **What is the purpose of a linkage in a mechanism?**\ **Answer:** To transfer motion and force between different parts of a mechanism. 2. **What is the difference between an open-loop and a closed-loop system?**\ **Answer:** An open-loop system has no feedback; a closed-loop system includes feedback. 3. **How do you calculate the mechanical advantage of a lever?**\ **Answer:** Mechanical Advantage = Load / Effort. 4. **What is the primary function of a belt drive in a mechanism?**\ **Answer:** To transfer rotational motion and power between shafts. 5. **What is Hooke\'s Law?**\ **Answer:** The force exerted by a spring is proportional to its extension (F = kx). 6. **What is a bevel gear, and where is it commonly used?**\ **Answer:** A bevel gear changes the direction of shaft rotation; commonly used in differential drives. 7. **Why is friction sometimes considered both beneficial and detrimental in mechanisms?**\ **Answer:** Friction can prevent slippage (beneficial) but also causes wear and energy loss (detrimental). 8. **If a 10N force is applied 0.5m from the pivot, what is the moment?**\ **Answer:** Moment = Force × Distance from pivot = 10N × 0.5m = 5Nm. 9. **How does slippage affect the efficiency of a belt drive system?**\ **Answer:** Slippage reduces the efficiency of power transfer between shafts. 10. **What is the difference between mass and weight?**\ **Answer:** Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.